320mm Oversize front disc 240mm rear disc bracket. Front wheel:3.5X17 36 HOLES. Rear wheel:4.25X17 36 HOLES. Tips : As experienced Rider suggests better you should adjust the spokes to make spokes get best banlance, first adjustment should be 1 week after assembly, and total need about 4 to 5 times which also according to your actual ridding.

FRONT= 21" X 1.60" 36 Holes Black RIM Red HUB. REAR= 19" X 2.15" 36 Holes Black RIM Red HUB. -6061-T6 aluminum alloy hub. Tips : As experienced Rider suggests better you should adjust the spokes to make spokes get best banlance, first adjustment should be 1 week after assembly, and total need about 4 to 5 times which also according to your actual ridding.